Home / 763,398.60-1,145,535.30-290,423.40

Finding the Fourth Proportional to 763,398.60, 1,145,535.30 and 290,423.40

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Solution

The fourth proportional to 763,398.60, 1,145,535.30 and 290,423.40 is: 435,801.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,398.60 : 1,145,535.30 = 290,423.40 : x
  2. Step 2: Convert to fraction form
    763,398.60/1,145,535.30 = 290,423.40/x
  3. Step 3: Cross multiply
    763,398.60x = 1,145,535.30 × 290,423.40
  4. Step 4: Simplify right side
    763,398.60x = 332,690,256,646.02
  5. Step 5: Solve for x
    x = 332,690,256,646.02/763,398.60
  6. Step 6: Final answer
    x = 435,801.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.